Home / 102,156.93-140,976.13-56,839.25

Finding the Fourth Proportional to 102,156.93, 140,976.13 and 56,839.25

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Solution

The fourth proportional to 102,156.93, 140,976.13 and 56,839.25 is: 78,437.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,156.93 : 140,976.13 = 56,839.25 : x
  2. Step 2: Convert to fraction form
    102,156.93/140,976.13 = 56,839.25/x
  3. Step 3: Cross multiply
    102,156.93x = 140,976.13 × 56,839.25
  4. Step 4: Simplify right side
    102,156.93x = 8,012,977,497.10
  5. Step 5: Solve for x
    x = 8,012,977,497.10/102,156.93
  6. Step 6: Final answer
    x = 78,437.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.